Title:
VALVE DEVICE OF ENGINE
Document Type and Number:
WIPO Patent Application WO/2000/071859
Kind Code:
A1
Abstract:
A valve device of an engine, wherein an opening part (7) smaller in area than the end surface of a piston (5) is provided in the end surface of a cylinder (3) so as to form a valve seat (8), and a valve disc (9) in contact with the valve seat (8) is disposed on the outerside of the valve seat (8) so that the cylinder (3) can be moved away from and toward the valve disc (9) and, in a compression stroke when the piston (5) rises, the valve seat (8) is in press-contact with the fixed valve disc (9) because an upward force is applied to the upper end surface of the cylinder (3) and the cylinder (3) is urged toward the valve disc, whereby an engine high in emission efficiency can be obtained because a highly airtight valve device can be obtained with a simple structure, and the area of the opening part can be increased up to the ultimate diameter of the piston.
More Like This:
| JPH04303105 | FOUR-CYCLE ENGINE |
Inventors:
ICHIKAWA MASAHARU (JP)
Application Number:
PCT/JP1999/002735
Publication Date:
November 30, 2000
Filing Date:
May 24, 1999
Export Citation:
Assignee:
ICHIKAWA MASAHARU (JP)
International Classes:
F01L1/44; F01L5/06; F02B25/04; F02B25/14; F02B75/34; F02G1/053; F02B75/02; (IPC1-7): F01L5/04; F01L1/00; F02G1/053; F02B23/00; F02B25/00; F16K1/00; F04B39/10
Foreign References:
| JPH01313608A | 1989-12-19 | |||
| JPH10325320A | 1998-12-08 | |||
| JPH0267047U | 1990-05-21 | |||
| JPS63201456A | 1988-08-19 |
Other References:
See also references of EP 1188906A4
Attorney, Agent or Firm:
Mine, Tadao (7F 5-19, Takadanobaba 1-chome Shinjuku-ku Tokyo, JP)
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